Syringe equipment



June 5, 1934.'v l l G. N.v HEIN SYRINGE 'EQUIPMENT Filed Jan. 20, 1931Patented June 5, 1934 UNITED STATES PATENTor-'FICE applicationJanuary'yzo, 1931, serialNo. 509.957 2 claims. (c1. 12s- 218) Thisinvention relates to syringe equipment Y and particularly to a type ofsyringe equipment wherein the material to be ejected is sealed in avial. Such equipment is very desirable in the 5 dental and medicalprofessions, and is adapted for packaging of a number of the syringevials in a case, so that each vial may contain a desired quantity offluid which will be maintained against impurities, and be ready ofaccess in a sterilized condition when used.

Objects of the invention are to provide a syringe vial economical inproduction 'so that it maybe discarded when emptied, and which isadaptable for packaging of a number of individual units in 15 a case orcontainer; to provide for maintaining the contents of the vials againstimpurities until used; to provide a vial to which an injection needlemay be' easily and positively attached without exposing the contents ofthe vial to the atmosphere or necessitating transfer of contents toseparate syringe barrels which may not have been adequately sterilized;to provide a sealed' struction and combination of parts hereinafterdescribed, illustrated in the accompanying draw- 3 ing and pointed outin the claims hereto appended; it being understood that various changesin the form, proportion, size and minor details of construction withinthe scope of the claims may be resorted to without departing from thespirit 4 or sacrificing any of the advantages of the invention.

To more clearly comprehend the invention, reference is directed to theaccompanying drawing, wherein- Fig. 1 is a longitudinal section oftubular body.

Fig. 2 is a longitudinal section of closure member.

Fig. 3 isa longitudinal section of ferrule member, with spring clips. f

Fig. 4 is a longitudinal section of closure member for filling end.

Fig. 5 is a longitudinal side'view of needle base and cannula, forusewith the ferrule of Fig. 3.

Fig. 6 is a longitudinal view, partly in section,

of the assembly of Figs. 1 to 5 inclusive, and including a plungermember.

Fig. 7 is a longitudinal section of modified form of tubular body.

Fig. 8 is a longitudinal section of modified form of the closure memberof Fig. 2, for discharge end. f

Fig. 9 is a longitudinal section of modified form of ferrule. n

Fig. 10 isa side view of threaded needle base and cannula for use withthe ferrule of Fig. 9.

Fig. 11 is a longitudinal section of an assembly in syringe formingrelation with an adapter socket for reception ofa standard syringe.

Fig. 12 is a longitudinal broken section of a modified form of tubularbody, showing discharge end only.

Fig. 13 is a longitudinal section of modified form of closure.

Fig. 14 is al longitudinal view, partly in section, of needle base andcannula, adapted for use with the closure member of Fig. 13.

Fig. 15 is a longitudinal view, partly in section, of an assembly' ofdevices in Figs. 12 to'14 inelusive.

- Fig. 16 is a longitudinal section of modified form of discharge end oftubular body.

Fig. 17 is a cross section of closure member,

Fig. 18 is a longitudinal section of. modiiied form of ferrule. A

Fig. 19 is a longitudinal side view of needlev base and cannula, partlyin section.`

Fig. 20 is a longitudinal side view, partly in section, of an assemblyof devices oi Figs. 16 to 19 inclusive.

Fig. 21 is a longitudinal section of discharge end of a form of tubularbody for-reception in the ferrule of Fig. 23. y l

Fig. 22 is a cross section of closure'member.

Fig. 23 is a longitudinal cross section oi ferrule member. 4

, Fig. 24 is a longitudinal cross section of needle base and cannulaadapted to use with the devices of Figs. 21 to 23 inclusive.

Referring to the drawing, wherein like characters of reference designatecorresponding parts:-

A vial is provided, preferably circular in transverse section, in which1 is an elongated tubular body of vimpervious material, preferably`ofglass. hard rubber or the like, open at a filling end 2 and at adischargevend 3. The `portion of the body 4 adjacent the discharge endpreferablyprovides a neck of smaller diameter than the remainder of thebody, so that there may be conveniently mounted thereon, so as to closethe opening of said discharge end, a puncturable closure member 5, whichcloses the discharge opening and which is preferably of resilientmaterial, such as elastic rubber, so that it serves not only as a 5closure member to seal the end. of the vial but also serves as packinggland for an injection needle inserted therethrough. The resilientclosure member 5 is of suitable type and shape to close the opening 3,and may assume cup-like form, as shown in Figs. 2,' 8 and 13, or discform, as in Figs. 1'7 and 22.'

While the closure member 5 is of the cup-like form, it is preferred thatthe diameter of the recess 6 therein should be a trie less than thediameter of the outer wall of the neck so that the side walls of the cupwillgrip by their resiliency the outer wall of the neck when mountedthereon. It is also preferred that the inner wall of the recess 6 shallbe straight axially longi- 20 tudinally so as to avoid expense informing an internal annular recess therein, and also for the purpose ofmaking it necessary to stretch the elastic material of the closuremember 5 over the bead 7, where the vial of Fig. 1 is used, so that theexpanding of the closure when the bead 7 is fully seated will exert aresilient contraction of the wall against the neck 4 of the vial. Ifdesired, the cup may be sealed to the neck by wax or cement to insureits tight adherence, and may have an arcuate internal end Wall, as inFigs. 8 and 13, providing resilient pressure upon the open discharge endof the vial to more securely close same.

From practical experience, it has been demonstrated that unless theclosure member at the discharge end and the injection needle have meanswhereby they are positively attached to or in relation to the syringevial, they are4 liable to be forced from their respective mountingsunder 4.04 the pressure necessary to an injection or a discharge of thevial contents. Therefore, the discharge end of the vial is preferablyadapted for positively and securely mounting the puncturable closuremember 5, and may also be provided to positively engage a tubularinjection needle. For this purpose the discharge end of the vial may beprovided with an annular bead 'I extending radially outwardly relativeto the longitudinal axis of the vial, externally of the' neck at itsdischarge end portion, so that'when the resilient cup-like closure.5 ismounted thereover, the cup by itsresiliency will assume externally theform of said bead, as shown in Figs. 6 and 11; or said annular bead maybe provided externally circumferentially of the closed end of thecup-like member 5, as shown in Figs. 13 and 15, in which case it may bethreaded externally, as at 8. A tubular needle having a discharge end 9is adapted to be mounted atthe discharge end of the vial, and isprovided with any suitable type of needle base 10, having the cannula 11extending therethrough and beyond the butt 12 of the base, so as toprovide a point for puncturing the resilient closure member 5.

The means of attachment of the needle to the vial may assume variousforms; preferred forms of which are illustrated in the accompanyingdrawing. In the assembly of Figs. 6 and 11, a. ferrule 13 is mountedlongitudinally circumfer- 70 ential of the resilient closure member, thefer- ,rule being provided with an annular groove 14 forming an inwardlyextending projection which,

by virtue of the resilience of the cup-like closure 5, slides over theannular bead thereof and grips 'i the closure member rearwardly of thebead.` The ferrule is provided at its unmounted end with means to engagethe needle base, and is exemplified in Figs. 3 and 6 by spring metaltongues 15 which spread sufficiently to permit the needle base to passtherebetween; and as shown in Figs. 9 and 11 consists of threads 16adapted to engage complementary threadsL of the needle base; while inFigs. 14 and 15 the ferrule 13 is made integral with the needle base andis provided with an internal thread 17.r adapted to engage thethread 8of the closure and thereby positively and securely mount the needlebase. Y

In Figs. 17 andv 22 are shown modications of resilient closure membersconsisting of discs 19 adapted to seat within the recess 20a of bridgedcollars 20 which are internally threaded, as at 18, to engagecomplementary external threads 21 on the neck portion of the vial, thebridged collars being provided with external threads 22 adapted tobeengaged by threaded sockets 23 in the needle bases, shown in Figs. 19and 24, respectively.

It will be noted that in each instance the puncturable closure member istightly secured to, and is adapted to tightly seal the discharge end ofthe vial, and when punctured by the cannula 1l is adapted to form agland or washer to provide a tight leaf-proof joint between the vial andneedle base.

The opposite open end 2 of the vial is closed 105 by a closure member24, snugly and slidably tf ting the internal walls of the tube 1, andpreferably being of resilient material and preferably formed withcircurnferentially concaved side walls 25, so as to reduce thefrictional contact with the walls of the vial, and provided with aconvex end 26 to more completely expel the contents of the vial. Theclosure 24 serves as a piston head and preferably is provided centrallyof its outer end with a projection 27 adapted to be 115 engaged byplunger 28 which is slidable within said tubular body, and is providedwith an opening 29 at one end adapted to receive said closure projection27, so that the plunger and closure member are relatively guided inaligned recipro- ,120

cation.

Since it may be desirable to seal the closure member 24 within the vialby suitable moistureproof wax, or in case said closure member adheres tothe side walls, it is advantageous to provide teeth 30 at theA end whichengages the closure 24, so that any seal existing between the pistonclosure member and the walls of the vial may be broken by rotation ofthe cork axially of the vial, to prevent any sudden and unintentionaldischarge ofthe vial contents in operation of the syringe.

Fig. '1 and Fig. 11 show a modified form of closure for the nlling end2, consisting preferably ofa spheroidal member 31 of elastic orcompressible material, such as soft vulcanized rubber, slidable withinbody 1, and slightly deformable so as to tightly seal said open end. Thecontainer vial 1, as shown in Fig. 7, may be formed at its open end 2,preferably threaded as at 32,

so as to mount thereat a support 33 for a plunger member 34, or as shownin Fig. 11, may mount,

as by threads 35, a socket 36 having a tubular neck 37, thev neck beingadapted to receive within itstubular portion the discharge end of asyringe 38 of standard and well known type, so f that the vial may beused with standard ejection equipment without transference of thecontents, in which case the standard syringe may belled with water orair which serve as a piston orplunger to actuate the closure member 31upon depression ofthe plunger 39. The type of closure member 24 shown inFig. 4, is equally adaptable to use in the structures shown in Figs. 'Zand 11 and vice versa.

It is to be understood that in Figs. 12, i6 and 21 an end portion onlyis shown of the vial, and that the opposite end portion of the vial mayassume forms similar or equivalent to the end portions of the gures inwhich the entire length of vial is shown. 1

Having thus described the invention what is claimed as new and desiredto be protected by Letters Patent is:-

l. The combination of a syringe vial adapted to contain a medicament,said vial adapted to be discarded when emptied, the needle end of saidvial,

terminating in a reduced. portion, said reduced portion terminating inan annular outwardly extending bead portion, a cup shaped puncturableclosure member disposed on said annular bead and reduced portion, of aninjection needle, and means for holding said needle in puncturablerelation with said closure member, said means comprising a ferrule, saidferrule being provided at substantially an intermediate point with anannular, radially, inwardly extending bead, said bead adapted to engageand cooperate with said outwardly extending bead forpositively holdingsaid closure member in fixed relation with said reduced portion, theoutermost end of said ferrule being'provided with means whereby theneedle may be snapped into said ferrule, said means comprising aresilient means.

2. In a syringe structure, the combination 'of a vial adapted to containa medicament, said vial normally having a filling and discharge end, a.

closure member for said filling end, the discharge end of said vialterminating in a reduced portion, the latter terminating in an outwardlyextending .annular ilange forming a bead and a puncturable closuremember disposed over said bead and said reduced portion, of' aninjection needle having a base portion, and means for flexiblyconnecting said needle to said vial, said means comprising `a ferrule,the latter being provided with an inwardly extending annular bead, thelast said bead adapted to engage the rst said bead for positivelyholding said puncturable member in rigid xed relation with saiddischarge end and for fastening said ferrule to said vial, the outermostend of said ferrule terminating in/diametrically oppo sitely disposedtongues, the outermost end of .said tongues terminating inwardly, saidtongues adapted to grasp and hold said base portion of said needle inoperable fixed relation with said punctu'rable` member.

GEORGE N. HEIN,

